On Sep 16, 8:19 am, Blake HAN <blake...@gmail.com> wrote:
> I try to get the total row number of a table which has more than
> 1,000,000 data. I got error message "query is too large. may not have
> more than 100 filters + sort orders + ancestor total". Anyone can help
> on that?
>
> My code looks like this:
>
> def get_count(query):
> BATCH_SIZE = 1000 # Maximum number of results returned by a query
> query = query.order('__key__')
> results = query.fetch(BATCH_SIZE)
> count = len(results)
>
> while True:
> if not results:
> return count
> last_key = results[-1]
> results = query.filter('__key__ > ', last_key).fetch
> (BATCH_SIZE)
> count = count + len(results)
>
> count = get_count(MyModel.all(keys_only=True))
The problem is that you're taking a single query and adding new
filters to it in a loop. You want to run multiple queries instead.
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